Production line boot sector lock

Details Production line boot sector lock Production line boot sector lock

2008-04-15

2008-04-15

Peeso, Thomas R. (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S100000, C725S153000, C725S146000, C725S152000

Reexamination Certificate

active

07360077

ABSTRACT:
Hacking of a class of Set-Top Boxes known as Integrated Receiver-Decoders (IRDs) used to receive satellite broadcasts for display on television sets is prevented by use of connections to the reprogramming enable pin of a flash memory. If a user attempts to reprogram the boot sector of the flash memory in order to obtain free service via privacy, the set-top box is destroyed. The invention relates to the design and manufacture of IRDs that are resistant to hacking via unauthorized reprogramming.

REFERENCES:
patent: 6345256 (2002-02-01), Milsted et al.
Search report dated Jan. 12, 2004.

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